Sister's Guilt and Brother's Thick Cock

As the siblings' bodies sway in the cramped space, the brother's hands roam, tracing the curves of his sister's body through her thin nightgown. Her breath catches in her throat as he cups her breasts, his thumbs brushing against her hardening nipples. She can feel his cock pressing against her, hot and insistent, as he grinds against her. Their eyes meet, and in that moment, they cross the line, their taboo desire consuming them. The sister's hands slip beneath his boxers, wrapping around his thick shaft, as he hikes up her nightgown, his fingers finding her wet, eager pussy.

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